Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Concurrent task interference in stutterers: dissociating hemispheric specialization and activation.

D C Forster1, W G Webster

  • 1Carleton University.

Canadian Journal of Psychology
|September 1, 1991
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Stuttering: current status of theory and therapy.

Canadian family physician Medecin de famille canadien·2011
Same author

Speech-motor control and interhemispheric relations in recovered and persistent stuttering.

Developmental neuropsychology·2001
Same author

Concurrent language and motor performance in bilinguals: a test of the age of acquisition hypothesis.

Canadian journal of psychology·1991
Same author

Task complexity and manual reaction times in people who stutter.

Journal of speech and hearing research·1991
Same author

Family history as a basis for subgrouping people who stutter.

Journal of speech and hearing research·1991
Same author

Ambulatory pumps.

Annals of the New York Academy of Sciences·1991
Same journal

Neural and behavioural effects of domoic acid, an amnesic shellfish toxin, in the rat.

Canadian journal of psychology·1992
Same journal

La langue et les Lèvres: cross-language influences on bimodal speech perception.

Canadian journal of psychology·1992
Same journal

Local and global contextual constraints on the identification of objects in scenes.

Canadian journal of psychology·1992
Same journal

Solving the "real" mysteries of visual perception: the world as an outside memory.

Canadian journal of psychology·1992
Same journal

Lesioning a connectionist model of visual search: selective effects on distractor grouping.

Canadian journal of psychology·1992
Same journal

Parallel pattern processing and visual agnosia.

Canadian journal of psychology·1992
See all related articles

Stutterers and non-stutterers showed similar dual-task interference with limb pairs. However, stutterers exhibited less left-hemisphere attentional bias compared to non-stutterers during complex tasks.

Area of Science:

  • Neuroscience
  • Speech and Language Sciences
  • Cognitive Psychology

Background:

  • Stuttering is a complex speech disorder potentially linked to neural interference and hemispheric communication.
  • Previous hypotheses suggest stuttering may arise from unregulated neural activity between brain hemispheres.
  • Understanding hemispheric contributions to attention and motor control is crucial for explaining stuttering mechanisms.

Purpose of the Study:

  • To investigate dual-task interference in stutterers and non-stutterers during concurrent hand and foot tasks.
  • To test the hypothesis that stutterers exhibit greater neural interference due to interhemispheric activity.
  • To explore differences in attentional biases and hemispheric activation patterns between stutterers and non-stutterers.

Main Methods:

Related Experiment Videos

  • Adult stutterers and non-stutterers performed a unimanual sequential finger tapping task.
  • A stimulus-contingent foot responding task was administered concurrently with the finger tapping.
  • All four combinations of hand and foot limb pairings (ipsilateral and contralateral) were utilized.

Main Results:

  • Both groups showed greater dual-task interference with ipsilateral compared to contralateral limb pairs.
  • Stutterers did not exhibit more interference than non-stutterers when using contralateral limb pairs, challenging prior hypotheses.
  • Non-stutterers showed more finger tapping interference with left-foot responding, suggesting left-hemisphere attentional bias.

Conclusions:

  • Stutterers may possess a more adaptable or labile system of hemispheric attention or activation.
  • The findings suggest that stuttering is not solely explained by increased interhemispheric neural interference.
  • Differences in attentional processing between feet in non-stutterers highlight hemispheric specialization in motor control.